25.1 Features
- Simple, yet Powerful and Flexible Communication Interface, only two Bus Lines Needed
 - Both Master and Slave Operation Supported
 - Device can Operate as Transmitter or Receiver
 - 7-bit Address Space Allows up to 128 Different Slave Addresses
 - Multi-master Arbitration Support
 - Up to 400kHz Data Transfer Speed
 - Slew-rate Limited Output Drivers
 - Noise Suppression Circuitry Rejects Spikes on Bus Lines
 - Fully Programmable Slave Address with General Call Support
 - Address Recognition Causes Wake-up When AVR is in Sleep Mode
 
